Direct-current turbo-generator.



EDWIN C. VBIGHT, OF NEWEORT,

PANY, A CORPORATON OF NEVI TURING GOMPANY, A. CORPORATION l? @fi-IIC.

DRECT-CURRENT GGENEET OR.

Specification of Letters Patent.

Patented May 1G, 191.0.

Application filed November 30, 1906. Serial No. 345,599.

' lowing is a full, clear, and exact specifica taining the coil retaining and tion.

My invention 'relates to dynamo-electric machines and particularly to high speed machines of the direct current type, such as direct currentturbo-generators.

ln a. high speed machine it is necessary to providevmeans for holding in position the portions oi the coils which project oeyond the ends of the core, so that the coils 'can not he injured or displaced by centrifugal action. lt has been proposed to sur round the coils hy heavy rings or hands made from some strong material such as phosphor bronze. lllhen rings are employed for this purpose, it is necessary to provide some means for supporting, centering and retaining the rings in position.

In direct current machines.considerable difliculty has been experienced in providing adequate supporting and protecting means for the coils at the conunutator end of the armature for the reason that on account of the commutator necks or leads connecting the coils to the commutator liars, it is a diilicult matter to provide proper means tor rcprotecting ring in position. 4Accordingly hand Wires have usually been relied upon for retaining the projecting portions of the coils in position. This latter expedient is not suitable for all types of machines, particularly large high spccd machines, for thc\ reason that at high peripheral speeds the band wires are in danger oil brcalt'ng loose and Wrecking the inachine.

The object of my invention is to provide improved means for securing and retaining.

in position rings tor the portions of the coils Wlnch proj eet beyond the ends of the cores of dynamo-electric machines, particularly at the commutator ends of armatures of direetcurrent machines.

In carrying outvrny invention l place the ring in position over the coils preferably `when hot and permit the ring to contract so that the engaging faces of thering and a l l l suitable support consisting pre"eral ly of the end niernher at the end of "he core interl loclr.

ln another' aspect my invention 'con sists of a rotary niexnher a dvnanioelectric machine comprising a c, an end inemH her? coils carried hy the and ertending beyond the end tliezzeo'l and a ring surrounding 't he coils and resting on the enel member, said ring and end member saving inter# locked or inleriitting eng i faces.

For a better nnderstancing or my invention is had tac accompanying drawin in Whichi Figure i par` sectional eleva-tion of a high. speed direct current armature equipped with my invention; Fig. 2 is a transverse sectional elevation ot` the same, the section lacing taken approximately along the line '2f-i3 oi l; and section similar te the section 2 showing a slight inodifcation.

lloret-ring nov. to the iig l have shown l) f mounted t i core il ai coin-in The core consists ol" lanirne h Li between end-members, one or' which is shown at i3. The armature provi ed willi a winding having portions which proj-eet beyond core and rest upon a` shoulder or lara het l5 which extends outward from the end-meuh her 13. The end-mem also pro-vided with a. tlange lo throng which the coils of the Winding in A l and il the llange is provided with open slots jor the windings. The coils are separated trom the shoulder or bracket i5 hy insuiation i7.

The hars 18 ont the coinniutator are held in position by plurality pf shrink-rings l) 'separated from the oars by insulation 20. The connnutator ha connected to the 'nds 14 ot the coils, ivhf li enteral a short distance beyond the bracket i5, by radial coinniutator leads or necks 9.1. These leads or necks are preferably riveted and soldered to the bars and soldered to the ends of the coils. The leads or necks are separa-ted from the end o'v the brac iet li'hy insulal tion'22. A A

Surrounding the projecting portions or ends 114 of the coils is a rigid ring or hind Q3 for -preventing displacement and injury -to 'the4 coils. The ring rests onthc flange 116 of the end-member and on a ring` or shield .he corresponding groove ring' consid era placement oarsicohirl and mea for will nor-v be i f tion the enwijo oi ihe is one of en e. rid

poeiion shown 'oj, ce same is slipped over the s ably clone lirs'f': hee., expands a suinicient rlegr of the ring lio loe i shoulder 2oy and hen cool ano7d to contrae lahge with il flange leeeif l in 1 groove in flle ring.

l`he l l pone?, mgly he .Groove shoulder A'che n the eo-eicicnr (liameier of the 1 rh-e j Living the iaion incl g' l Sieeqil liee wrhiilgioiis Known ihe ng and eucls 'io ohlam i member can he fo mee-hi 'ie-:i as eeellA ,a en 'Lhe ring an". bei', and in all cases 5.1i' fr winded e Sufheiehi' :mienne te il; "he use no-li-leerie ma,- ohine, a core, an. herelor: provideel wird e radial (ljacen'r le the core7 coils carried by seid. core and. projccfingl beyond the end hereof through openchlne slotted l l l Il l l Il l l l l i l l ine-ae ne oeils 'nge in said flange7 and a ringY eurroumling Harige and the projecting p'orionsrof the coils? said ring and flange having inlerloclmd parte which prevent axial movement of the ring:

a roor of a dynamo-electric maelotied core, an end-member therele carried in die slots of Said core rejecting beyond the end thereof enihgs in said end-member9 a ring reminding the projecting` Qortions of the e am; resting on Said end-member.l and :for retaining said ring,-- on Said eno',- iem comprising a ridge or shoulder on one of saif'l paris.

a rotor of a dynamo-electric malaniina 'ed coreJ an end-member therefor, coils carried in the slots oi Said eore and projecting beyond the end thereof ihre "i openings insaicl enel-member, and surrounding' the and restingon said end member,

Said. ring and end-member having intertting parte which maintain Jshe ring in posirien .iii-the rotor of a dynamo-electric machine, a core, an end-member therefor having; ciicumlerentially proj :ting annular ridge and an axially projecting annular shoulder7 a ring having an internal annular groove with which said ridge engages, and coils carried by Said core and having projectlng ende clamped between said ring and .said shoulder.

in ihe rotor of 'a dynamo-electric mehine, e Slotted core, an end-member chere- 'ihaving a circnmfereneially projecting annular ridge, coils in the slots of 'the core enel having ends projecting beyond the core ihrough Said end me. iher, and a rigid ring surrounding Said projecting ende and provided with an internal groove with which saill rillge engage?, said ridge having an outer elameter which 1S less than the inner (liameler of the ring:r save When Jihe latter is at a higher temperature than the end-memln the rotor of a dynamo-electric machine5 a Slotted core, an end-member therefor, coils carried in the Slots of said core and projecting beyond the core through said end membe', and a rigid ring surrounding said projecting ends, said rimf and said enclmeinber having a ridge amil a groove which interlock7 -the diameters of the ridge and groove' being;r such that the ring' and endmen'i'oer will clear when one is at a higher temperature than the other, and will be .firmly aslenecl higether when atl the same lei perelure.

7. n a rotor of a dynamo-electric machine, a core, an end member therefor provided with a radial fiance adjacent to the core, coils carried by Sai core and projecting beyond the end thereof through openorojecting portions of,

ings in Said flange, and a ring` surrounding .thelange and the projecting portions of the coils, said ring and flange having parts which interlock to prevent axial movement between the ring ancl lange when the-two are at the same temperature, but allow suoli axial movement when the parte areat different temperatures.

8. In a rotor of a dl'ynanio-elecli'i :L1 chine, a Core, an end member having aaiiial flange adjacent to the core anfl aiinxially projecting annulai` shoulder, coils carried by said eoie and extending Lln-ougli openings in Saul flanget and a fang surrounding ilie coils,

flange, and Slionlile: and clamping the coils 

